Currently it throws:
[2015-07-09 23:22:14] Starting LQT conversion of page
Catchable fatal error: Argument 1 passed to Flow\Import\Converter::convert() must be an instance of Title, null given, called in /mnt/srv/mediawiki-staging/php-master/extensions/Flow/includes/Import/Converter.php on line 108 and defined in /mnt/srv/mediawiki-staging/php-master/extensions/Flow/includes/Import/Converter.php on line 123
Hit this when accidentally had a blank line at the end of the file.